USB to PS2 USB-to-PS2 Computer Keyboard and Mouse Adapter Connection Y Cable Compliant with USB HID spec Fully compliant with PS/2 keyboard/ mouse. Support USB and PS2 plug and play Also support two PS/2 keyboard or two PS/2 mouse(2P model). Support Windows 98/ SE/ ME/ 2000/ XP/ Vista and Mac OS9.0/OSX/Linux.